PIN FUNCTIO
參數(shù)資料
型號(hào)： LTC1599ACG#TR
廠商： Linear Technology
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 0K
描述： IC DAC 16BIT PARALLEL IN 24SSOP
標(biāo)準(zhǔn)包裝： 1,800
設(shè)置時(shí)間： 1µs
位數(shù)： 16
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 單電源
功率耗散（最大）： 55µW
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 24-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 24-SSOP
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 3 電流，單極；3 電流，雙極
采樣率（每秒）： *
7
LTC1599
sn1599 1599fs
PIN FUNCTIONS
UU
U
CLVL (Pin 10): Clear Level. CLVL = 0, selects reset to zero
code. CLVL = 1, selects reset to midscale code. Normally
hardwired to a logic high or a logic low.
LD (Pin 11): DAC Digital Input Load Control Input. When
LD is taken to a logic low, data is loaded from the input
register into the DAC register, updating the DAC output.
WR (Pin 12): DAC Digital Write Control Input. When WR
is taken to a logic low, data is loaded from the 8 digital input
pins into the 16-bit wide input register. The MLBYTE pin
determines whether the MSB or LSB byte is loaded.
MLBYTE (Pin 13): MSB or LSB Byte Select. When MLBYTE
is taken to a logic low and WR is taken to a logic low, data
is loaded from the 8 digital input pins into the first 8 bits
of the 16-bit wide input register. When MLBYTE is taken to
a logic high and WR is taken to a logic low, data is loaded
from the 8 digital input pins into the 8 MSB bits of the input
register.
D7 to D3 (Pins 14 to 18): Digital Input Data Bits.
DGND (Pin 19): Digital Ground. Tie to ground.
VCC (Pin 20): The Positive Supply Input. 4.5V ≤ VCC ≤ 5.5V.
Requires a bypass capacitor to ground.
D2 to D0 (Pins 21 to 23): Digital Input Data Bits.
CLR (Pin 24): Digital Clear Control Function for the DAC.
When CLR and CLVL are taken to a logic low, the DAC
output and all internal registers are set to zero code. When
CLR is taken to a logic low and CLVL is taken to a logic high,
the DAC output and all internal registers are set to midscale
code.
REF (Pin 1): Reference Input. Typically ±10V, accepts up
to ±25V. In 2-quadrant mode, this pin is the reference
input. In 4-quadrant mode, this pin is driven by external
inverting reference amplifier.
R2 (Pin 2): 4-Quadrant Resistor R2. Typically ±10V,
accepts up to ±25V. In 2-quadrant operation, connect this
pin to ground. In 4-quadrant mode tie to the REF pin and
to the output of an external amplifier. See Figures 1 and 3.
RCOM (Pin 3): Center Tap Point of the Two 4-Quadrant
Resistors R1 and R2. Normally tied to the inverting input
of an external amplifier in 4-quadrant operation, otherwise
connect this pin to ground. See Figures 1 and 3. The ab-
solute maximum voltage range on this pin is – 0.3V to 12V.
R1 (Pin 4): 4-Quadrant Resistor R1. Typically ±10V,
accepts up to ±25V. In 2-quadrant operation connect this
pin to ground. In 4-quadrant mode tie to ROFS (Pin 5). See
Figures 1 and 3.
ROFS (Pin 5): Bipolar Offset Resistor. Typically swings
±10V, accepts up to ±25V. In 2-quadrant operation, tie to
RFB. In 4-quadrant operation tie to R1.
RFB (Pin 6): Feedback Resistor. Normally tied to the output
of the current to voltage converter op amp. Typically
swings ±10V. Swings ±VREF.
IOUT1 (Pin 7): DAC Current Output. Tie to the inverting
input of the current to voltage converter op amp.
IOUT2F (Pin 8): Force Complement Current Output. Nor-
mally tied to ground.
IOUT2S (Pin 9): Sense Complement Current Output. Nor-
mally tied to ground.
TRUTH TABLE
Table 1
CONTROL INPUTS
CLR
WR
MLBYTE
LD
REGISTER OPERATION
0
X
Reset Input and DAC Registers to Zero Scale When CLVL = 0 and Midscale When CLVL = 1
1
0
1
Load the LSB Byte of the Input Register with All 8 Data Bits
1
Load the MSB Byte of the Input Register with All 8 Data Bits
11
X
Load the DAC Register with the Contents of the Input Register
1
X
1
No Register Operation
1
X
Flow-Through Mode. The DAC Register and the Selected Input Register Are Transparent. The Unselected Input
Register Retains Its Previous Data Byte. Note Only One Byte Is Transparent at a Time, the Selected Byte Being
Determined By the Logic Value of MLBYTE Prior to WR Being Pulsed Low.
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